1 files changed, 102 insertions, 0 deletions
diff --git a/src/exchangedb/exchange_do_insert_aml_decision.sql b/src/exchangedb/exchange_do_insert_aml_decision.sql
new file mode 100644
index 000000000..b3f77c8c4
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@@ -0,0 +1,102 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2023 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+--
+
+CREATE OR REPLACE FUNCTION exchange_do_insert_aml_decision(
+  IN in_h_payto BYTEA,
+  IN in_new_threshold_val INT8,
+  IN in_new_threshold_frac INT4,
+  IN in_new_status INT4,
+  IN in_decision_time INT8,
+  IN in_justification VARCHAR,
+  IN in_decider_pub BYTEA,
+  IN in_decider_sig BYTEA,
+  OUT out_invalid_officer BOOLEAN,
+  OUT out_last_date INT8)
+LANGUAGE plpgsql
+AS $$
+BEGIN
+-- Check officer is eligible to make decisions.
+PERFORM
+  FROM exchange.aml_staff
+  WHERE decider_pub=in_decider_pub
+    AND is_active
+    AND NOT read_only;
+IF NOT FOUND
+THEN
+  out_invalid_officer=TRUE;
+  out_last_date=0;
+  RETURN;
+END IF;
+out_invalid_officer=FALSE;
+
+-- Check no more recent decision exists.
+SELECT decision_time
+  INTO out_last_date
+  FROM exchange.aml_history
+  WHERE h_payto=in_h_payto
+  ORDER BY decision_time DESC;
+IF FOUND
+THEN
+  IF out_last_date >= in_decision_time
+  THEN
+    -- Refuse to insert older decision.
+    RETURN;
+  END IF;
+  UPDATE exchange.aml_status
+    SET threshold_val=in_threshold_val
+       ,threshold_frac=in_threshold_frac
+       ,status=in_new_status
+   WHERE h_payto=in_h_payto;
+  ASSERT FOUND, 'cannot have AML decision history but no AML status';
+ELSE
+  out_last_date = 0;
+  INSERT INTO exchange.aml_status
+    (h_payto
+    ,threshold_val
+    ,threshold_frac
+    ,status)
+    VALUES
+    (in_h_payto
+    ,in_threshold_val
+    ,in_threshold_frac
+    ,in_new_status);
+END IF;
+
+
+INSERT INTO exchange.aml_history
+  (h_payto
+  ,new_threshold_val
+  ,new_threshold_frac
+  ,new_status
+  ,decision_time
+  ,justification
+  ,decider_pub
+  ,decider_sig
+  ) VALUES
+  (in_h_payto
+  ,in_new_threshold_val
+  ,in_new_threshold_frac
+  ,in_new_status
+  ,in_decision_time
+  ,in_justification
+  ,in_decider_pub
+  ,in_decider_sig);
+
+END $$;
+
+
+COMMENT ON FUNCTION exchange_do_insert_aml_decision(BYTEA, INT8, INT4, INT4, INT8, VARCHAR, BYTEA, BYTEA)
+  IS 'Checks whether the AML officer is eligible to make AML decisions and if so inserts the decision into the table';